This function operates on a string buffer and concatenates both the year
and month. It will be used later when the mdt is added as a parameter.

Signed-off-by: Stefan Kerkmann <[email protected]>
---
 drivers/mci/mci-core.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index df72445edd..48eee35f2c 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -2030,6 +2030,20 @@ static unsigned extract_mdt_year(struct mci *mci)
        return year;
 }
 
+/**
+ * Extract the manufacturing date from the CID
+ * @param mci Instance data
+ *
+ * The 'MDT' is encoded in bit 19:8 in the CID
+ */
+static void extract_mdt(struct mci *mci, char mdt[static 8])
+{
+       unsigned month = extract_mdt_month(mci);
+       unsigned year = extract_mdt_year(mci);
+
+       snprintf(mdt, 8, "%u.%u", year, month);
+}
+
 static const char *mci_timing_tostr(unsigned timing)
 {
        switch (timing) {

-- 
2.39.2


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